The NG special issue (as stated in the title) starts with an editorial looking back about a 100 years at parts of NG's world view on demographics.
The first article is about a biracial couple having twin girl babies, one black and one white, now 11 years old. Several more articles provide food for thought and debate.
"A Color Wheel of Humanity" is interesting in context of photography. Having matched nose color in thousands of portraits to Pantone colors, photographer Angelica Dass presents 60+ of her photographs to demonstrate skin tone variety. To me, those images also indicate why post processing to the "true", "right" or "best" skin tone is such a challenge.
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Odd S.